Yoshiaki Nagasawa

Title: Yoshiaki Nagasawa: Innovator in Engine Control Technology

Introduction

Yoshiaki Nagasawa is a prominent inventor based in Hitachinaka, Japan. He has made significant contributions to the field of automotive technology, particularly in the development of internal combustion engine control systems. With a total of nine patents to his name, Nagasawa's work has had a considerable impact on fuel efficiency and drivability in vehicles.

Latest Patents

One of Nagasawa's latest patents is an internal combustion engine control unit. This innovative unit controls an engine by detecting combustion characteristics with a simple configuration that is robust against disturbances such as noise. The control unit includes a rotational speed calculation unit that calculates the crank rotational speed of the engine, an extreme value timing calculation unit that determines the extreme value timing of the crank speed, and a combustion state estimation unit that assesses the combustion state based on the calculated extreme value timing.

Another notable patent is for a hybrid vehicle cruise control device. This device achieves both a reduction in fuel consumption and an improvement in drivability during constant-speed and follow-up traveling modes. The control unit manages an Integrated Starter Generator (ISG) connected to both the engine and a battery. It performs control to supply power to the ISG from the battery or to generate power for charging the battery, ensuring optimal performance throughout the vehicle's traveling cycle.

Career Highlights

Nagasawa has worked with reputable companies in the automotive industry, including Hitachi Automotive Systems, Ltd. and Hitachi Astemo Ltd. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking technologies in engine control systems.

Collaborations

Throughout his career, Nagasawa has collaborated with notable colleagues such as Toshio Hori and Shigenori Nakazato. These partnerships have fostered innovation and have been instrumental in the development of advanced automotive technologies.

Conclusion

Yoshiaki Nagasawa is a distinguished inventor whose work in engine control technology has significantly advanced the automotive industry. His innovative patents reflect his commitment to improving vehicle performance and efficiency. His contributions continue to influence the future of automotive engineering.